Issues with Fixya chat?

Question

I have tried assisting through the chat twice and once I couldn't see the customers response on my end and the next time while chatting the window closed by itself.This is certainly leading to a bad customer experience even if the resolution is later given adding comments.Plz help and point to the possible causes. coz other wise in the regular provide assistance option I don't face any such technical issue and it doesn't happen with any of my chat utilities installed on my system. please help.